I have been using Cathe's weight's videos for about 3 years. Giving more emphasis on PUB/PLB, Slow & Heavy and Pure Strength Series. Let me tell you they are a really heavy, good, and thoroughly workouts to build muscles, endurance and help your overall shape. My roommate saw me one time working out with Cathe's video and he was like: "hey, that's for sissy people" x( ..until one time I challenged him to do PUB with the same weight Cathe uses }( and...oh my!..I had so much fun looking at him struggling to finish those reps..LOL!!!...Now he is Cathe's fan and he is also making changes to his body shape.
So, yeap, Cathe are one of the best, strongest and challenge workouts for guys also!